IX Corps

9 Corps, 9th Corps, Ninth Corps, or IX Corps may refer to:

France

 * 9th Army Corps (France)
 * IX Corps (Grande Armée), a unit of the Imperial French Army during the Napoleonic Wars

Germany

 * IX Corps (German Empire), a unit of the Imperial German Army prior to and during World War I
 * IX Reserve Corps (German Empire), a unit of the Imperial German Army during World War
 * IX Army Corps (Wehrmacht), a unit in World War II
 * IX SS Mountain Corps, a unit in World War II

Other countries

 * IX Corps (India)
 * IX Corps (Ottoman Empire)
 * IX Corps (United Kingdom)
 * IX Corps (Union Army)
 * IX Corps (United States)
 * 9th Corps (Yugoslav Partisans)